Wide Flange Steel I Beam: W12 × 45

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Glossary » Beams » Simply Supported » Uniformly Distributed Load » Single Span » Wide Flange Steel I Beam » W12 × 45

For a simply supported beam in a single span, the maximum displacement and the maximum normal stress occur at the center of the beam.
The tabulated data listed in this page are calculated based on the area moment of inertia (Ixx = 350 in4) for the W12 × 45 Wide Flange Steel I Beam and the typical Young's modulus (E = 3.046 × 107 psi) of steels. Note that the typical yielding stress of steels can range from 1.015 × 104 to 2.970 × 105 psi. The purpose of this page is to give a rough estimation of the load-bearing capacity of this particular beam, rather than a guideline for designing actual building structures. Please check your local building codes for regulatory requirements.

Note: The weight of the beam itself is not included in the calculation.

 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 3.00 ft (lbf/ft) (in) (psi) 45.0 7.69 × 10-6 10.5 50.0 8.55 × 10-6 11.6 60.0 1.03 × 10-5 14.0 70.0 1.20 × 10-5 16.3 80.0 1.37 × 10-5 18.6 90.0 1.54 × 10-5 20.9 100 1.71 × 10-5 23.3 200 3.42 × 10-5 46.5 300 5.13 × 10-5 69.8 400 6.84 × 10-5 93.0 500 8.55 × 10-5 116 600 1.03 × 10-4 140 700 1.20 × 10-4 163 800 1.37 × 10-4 186 900 1.54 × 10-4 209 1000 1.71 × 10-4 233 2000 3.42 × 10-4 465 3000 5.13 × 10-4 698 4000 6.84 × 10-4 930 5000 8.55 × 10-4 1160 6000 0.00103 1400 7000 0.00120 1630 8000 0.00137 1860 9000 0.00154 2090 1.00 × 104 0.00171 2330 2.00 × 104 0.00342 4650 3.00 × 104 0.00513 6980 4.00 × 104 0.00684 9300 5.00 × 104 0.00855 1.16 × 104 6.00 × 104 0.0103 1.40 × 104 7.00 × 104 0.0120 1.63 × 104 8.00 × 104 0.0137 1.86 × 104 9.00 × 104 0.0154 2.09 × 104 1.00 × 105 0.0171 2.33 × 104 2.00 × 105 0.0342 4.65 × 104 3.00 × 105 0.0513 6.98 × 104 4.00 × 105 0.0684 9.30 × 104 5.00 × 105 0.0855 1.16 × 105 6.00 × 105 0.103 1.40 × 105 7.00 × 105 0.120 1.63 × 105 8.00 × 105 0.137 1.86 × 105 9.00 × 105 0.154 2.09 × 105 1.00 × 106 0.171 2.33 × 105 1.28 × 106 0.218 2.97 × 105
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 5.00 ft (lbf/ft) (in) (psi) 45.0 5.94 × 10-5 29.1 50.0 6.60 × 10-5 32.3 60.0 7.91 × 10-5 38.8 70.0 9.23 × 10-5 45.2 80.0 1.06 × 10-4 51.7 90.0 1.19 × 10-4 58.1 100 1.32 × 10-4 64.6 200 2.64 × 10-4 129 300 3.96 × 10-4 194 400 5.28 × 10-4 258 500 6.60 × 10-4 323 600 7.91 × 10-4 388 700 9.23 × 10-4 452 800 0.00106 517 900 0.00119 581 1000 0.00132 646 2000 0.00264 1290 3000 0.00396 1940 4000 0.00528 2580 5000 0.00660 3230 6000 0.00791 3880 7000 0.00923 4520 8000 0.0106 5170 9000 0.0119 5810 1.00 × 104 0.0132 6460 2.00 × 104 0.0264 1.29 × 104 3.00 × 104 0.0396 1.94 × 104 4.00 × 104 0.0528 2.58 × 104 5.00 × 104 0.0660 3.23 × 104 6.00 × 104 0.0791 3.88 × 104 7.00 × 104 0.0923 4.52 × 104 8.00 × 104 0.106 5.17 × 104 9.00 × 104 0.119 5.81 × 104 1.00 × 105 0.132 6.46 × 104 2.00 × 105 0.264 1.29 × 105 3.00 × 105 0.396 1.94 × 105 4.00 × 105 0.528 2.58 × 105 4.60 × 105 0.606 2.97 × 105
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 10.0 ft (lbf/ft) (in) (psi) 45.0 9.50 × 10-4 116 50.0 0.00106 129 60.0 0.00127 155 70.0 0.00148 181 80.0 0.00169 207 90.0 0.00190 233 100 0.00211 258 200 0.00422 517 300 0.00633 775 400 0.00844 1030 500 0.0106 1290 600 0.0127 1550 700 0.0148 1810 800 0.0169 2070 900 0.0190 2330 1000 0.0211 2580 2000 0.0422 5170 3000 0.0633 7750 4000 0.0844 1.03 × 104 5000 0.106 1.29 × 104 6000 0.127 1.55 × 104 7000 0.148 1.81 × 104 8000 0.169 2.07 × 104 9000 0.190 2.33 × 104 1.00 × 104 0.211 2.58 × 104 2.00 × 104 0.422 5.17 × 104 3.00 × 104 0.633 7.75 × 104 4.00 × 104 0.844 1.03 × 105 5.00 × 104 1.06 1.29 × 105 6.00 × 104 1.27 1.55 × 105 7.00 × 104 1.48 1.81 × 105 8.00 × 104 1.69 2.07 × 105 9.00 × 104 1.90 2.33 × 105 1.00 × 105 2.11 2.58 × 105 1.15 × 105 2.43 2.97 × 105
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 15.0 ft (lbf/ft) (in) (psi) 45.0 0.00481 262 50.0 0.00534 291 60.0 0.00641 349 70.0 0.00748 407 80.0 0.00855 465 90.0 0.00962 523 100 0.0107 581 200 0.0214 1160 300 0.0321 1740 400 0.0427 2330 500 0.0534 2910 600 0.0641 3490 700 0.0748 4070 800 0.0855 4650 900 0.0962 5230 1000 0.107 5810 2000 0.214 1.16 × 104 3000 0.321 1.74 × 104 4000 0.427 2.33 × 104 5000 0.534 2.91 × 104 6000 0.641 3.49 × 104 7000 0.748 4.07 × 104 8000 0.855 4.65 × 104 9000 0.962 5.23 × 104 1.00 × 104 1.07 5.81 × 104 2.00 × 104 2.14 1.16 × 105 3.00 × 104 3.21 1.74 × 105 4.00 × 104 4.27 2.33 × 105 5.00 × 104 5.34 2.91 × 105 5.11 × 104 5.46 2.97 × 105
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 20.0 ft (lbf/ft) (in) (psi) 45.0 0.0152 465 50.0 0.0169 517 60.0 0.0203 620 70.0 0.0236 724 80.0 0.0270 827 90.0 0.0304 930 100 0.0338 1030 200 0.0675 2070 300 0.101 3100 400 0.135 4130 500 0.169 5170 600 0.203 6200 700 0.236 7240 800 0.270 8270 900 0.304 9300 1000 0.338 1.03 × 104 2000 0.675 2.07 × 104 3000 1.01 3.10 × 104 4000 1.35 4.13 × 104 5000 1.69 5.17 × 104 6000 2.03 6.20 × 104 7000 2.36 7.24 × 104 8000 2.70 8.27 × 104 9000 3.04 9.30 × 104 1.00 × 104 3.38 1.03 × 105 2.00 × 104 6.75 2.07 × 105 2.87 × 104 9.70 2.97 × 105
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 25.0 ft (lbf/ft) (in) (psi) 45.0 0.0371 727 50.0 0.0412 808 60.0 0.0495 969 70.0 0.0577 1130 80.0 0.0660 1290 90.0 0.0742 1450 100 0.0824 1620 200 0.165 3230 300 0.247 4850 400 0.330 6460 500 0.412 8080 600 0.495 9690 700 0.577 1.13 × 104 800 0.660 1.29 × 104 900 0.742 1.45 × 104 1000 0.824 1.62 × 104 2000 1.65 3.23 × 104 3000 2.47 4.85 × 104 4000 3.30 6.46 × 104 5000 4.12 8.08 × 104 6000 4.95 9.69 × 104 7000 5.77 1.13 × 105 8000 6.60 1.29 × 105 9000 7.42 1.45 × 105 1.00 × 104 8.24 1.62 × 105 1.84 × 104 15.2 2.97 × 105
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 30.0 ft (lbf/ft) (in) (psi) 45.0 0.0769 1050 50.0 0.0855 1160 60.0 0.103 1400 70.0 0.120 1630 80.0 0.137 1860 90.0 0.154 2090 100 0.171 2330 200 0.342 4650 300 0.513 6980 400 0.684 9300 500 0.855 1.16 × 104 600 1.03 1.40 × 104 700 1.20 1.63 × 104 800 1.37 1.86 × 104 900 1.54 2.09 × 104 1000 1.71 2.33 × 104 2000 3.42 4.65 × 104 3000 5.13 6.98 × 104 4000 6.84 9.30 × 104 5000 8.55 1.16 × 105 6000 10.3 1.40 × 105 7000 12.0 1.63 × 105 7050 12.1 1.64 × 105
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 40.0 ft (lbf/ft) (in) (psi) 45.0 0.243 1860 50.0 0.270 2070 60.0 0.324 2480 70.0 0.378 2890 80.0 0.432 3310 90.0 0.486 3720 100 0.540 4130 200 1.08 8270 300 1.62 1.24 × 104 400 2.16 1.65 × 104 500 2.70 2.07 × 104 600 3.24 2.48 × 104 700 3.78 2.89 × 104 800 4.32 3.31 × 104 900 4.86 3.72 × 104 1000 5.40 4.13 × 104 2000 10.8 8.27 × 104 2230 12.1 9.23 × 104
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 50.0 ft (lbf/ft) (in) (psi) 45.0 0.594 2910 50.0 0.660 3230 60.0 0.791 3880 70.0 0.923 4520 80.0 1.06 5170 90.0 1.19 5810 100 1.32 6460 200 2.64 1.29 × 104 300 3.96 1.94 × 104 400 5.28 2.58 × 104 500 6.60 3.23 × 104 600 7.91 3.88 × 104 700 9.23 4.52 × 104 800 10.6 5.17 × 104 900 11.9 5.81 × 104 914 12.1 5.91 × 104
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 60.0 ft (lbf/ft) (in) (psi) 45.0 1.23 4190 50.0 1.37 4650 60.0 1.64 5580 70.0 1.91 6510 80.0 2.19 7440 90.0 2.46 8370 100 2.74 9300 200 5.47 1.86 × 104 300 8.21 2.79 × 104 400 10.9 3.72 × 104 441 12.1 4.10 × 104
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 70.0 ft (lbf/ft) (in) (psi) 45.0 2.28 5700 50.0 2.53 6330 60.0 3.04 7600 70.0 3.55 8860 80.0 4.05 1.01 × 104 90.0 4.56 1.14 × 104 100 5.07 1.27 × 104 200 10.1 2.53 × 104 238 12.1 3.01 × 104
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 80.0 ft (lbf/ft) (in) (psi) 45.0 3.89 7440 50.0 4.32 8270 60.0 5.19 9920 70.0 6.05 1.16 × 104 80.0 6.92 1.32 × 104 90.0 7.78 1.49 × 104 100 8.65 1.65 × 104 139 12.1 2.31 × 104
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 90.0 ft (lbf/ft) (in) (psi) 45.0 6.23 9420 50.0 6.92 1.05 × 104 60.0 8.31 1.26 × 104 70.0 9.69 1.47 × 104 80.0 11.1 1.67 × 104 87.1 12.1 1.82 × 104
 Steel I Beam: W12 × 45 (Wide Flange 12 inch tall × 45 lbf/ft) L = 100 ft (lbf/ft) (in) (psi) 45.0 9.50 1.16 × 104 50.0 10.6 1.29 × 104 57.1 12.1 1.48 × 104